Armored Caster (D&D feat)
From Hastur
Armored Caster (General)
You have learned to gesture freely in armor.
Prerequisites: Armor Proficiency (light)
Benefit: You can ignore the normal spell failure chance for arcane spells when wearing light armor. You still suffer normal spell failure while wearing medium or heavy armor or a shield.
Notes: This fulfills the prerequisite for the Battle Caster feat (Complete Arcane 75).